导热的

Further, the second order derivative about the temperature along axial microtube to the length is obtained.

建立简化的数学模型，并通过推导获得了沿轴向的导热对内部对流换热的关系式。

At first,the limitation of the general heat conduction equation is discussed and then,nonlinear heat conduction equations are derived,when we consider that thermal conductivity,specific heat capacity and density are dependent of temperature.

研究了线性情形中热传导方程的局限性，在此基础上考虑到热传导方程中导热系数、比热容、密度与温度的关系，导出了非线性热传导方程，并求出了几类非线性热传导方程的孤波解。

Addition of steel bar can increase conductivity for heat, and reduce specific heat of concrete.

钢筋的加入可以提高混凝土的导热性能，减小混凝土的比热。

These effects are investigated in the paper. Then, the hysteria boiling and sudden drop of superheat degree are explained.

本文讨论了沸腾过热度对"当量导热系数"的影响，并探讨了工质沸腾的滞后效应以及过热度突降的物理现象。

In this work, how the axial thermal conductivity of the three kinds of nanotubes is affected by axial length, temperature and tensile strain is investigated, and their thermal conductivities are compared and analized.

研究了轴向长度、温度和外加拉伸应变等因素对三种纳米管的轴向热导率的影响，并对三种纳米管的导热性能进行了比较。

A method of measuring the materials thermal conductivity is proposed, through optimal approach of the measurement of the surface temperature with the analytical solution to calculate the materials thermal conductivity in the third boundary condition.

提出了一种根据第三类边界条件下物体瞬态温度场的变化规律，利用物体表面温度的实测值推算物体导热系数的快速测定方法。

Enhancement of the heat and mass transfer of adsorbent is very valuable to adsorption refrigeration.

提高吸附剂的导热传质性能对吸附制冷的研究具有较大的实用价值。

Especially the alloyage technics reatly improved the heat conducting function of cooling wall.

尤其是冷却水管的合金化处理技术，在保证防渗碳效果及微量间隙的同时，使冷却壁整体热阻降低了50%以上，极大地提高了冷却壁的导热性能

It has been shown that the theoretical calculative formula, which is based on fractal description, has higher precision.

这表明了基于分形理论描述的耐火纤维材料有效导热系数的计算式具有较高的表达精度。

The evaluation indexes, which sign the testing results, are put forward, the indices include the difference of calefactive ratio, the heat insulation ratio, effective thermal conductivity, compound thermal resistance and response time.

二、提出了本文所研制的测试装置测试结果的评价指标，具体指标为升温速率差、织物试样的隔热率、名义导热系数和复合热阻及温度动态响应时间。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐